Unable to start application using Qt Creator 4.6.X

Up until 4.6.0 my MinGW, QBS based project worked just fine in Qt Creator.  However, now when I start my application it crashes right away saying:

    The program has unexpectedly finished.
    The process was ended forcefully.

I am able to run example programs, I suspect it is how Qt Creator is configured that is doesn't know where to look for the MinGW or the Qt libraries.  I noticed the new option "Add library paths to run environment" but toggling this doesn't fix the issue.  If I manually copy all the needed DLLs to my install-root folder where my exe is located, I can start the program from Qt Creator just fine.

I'm looking for advice on what else to try, my team has been trying to resolve this issue since Qt Creator 4.6.0 was initially released.